JPH0441576B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a low-protein feed for chick-rearing in which the amino acids Arg, Lys, Met, Thr, and Gly are corrected individually or in a mixture to meet NRC requirements. [Prior Art] Poultry feed contains proteins, energy sources, calcium sources, phosphorus sources, vitamins, minerals, and the like. Contains protein such as fish meal, soybean meal, rapeseed meal, feather meal, and meat bone meal. [Problems to be Solved by the Invention] However, since the above-mentioned protein sources are expensive and tend to be in short supply, it has been desired to improve their utilization efficiency. In particular, our country relies on imports for most of its feed materials, and the efficient use of feed materials is an important issue for Japan's livestock production that requires technological development. [Means for Solving the Problems] The present invention solves the problems and provides a low-protein feed that reduces the crude protein content in the feed and has properties equivalent to conventional high-protein feeds. It is something. The feed of the present invention has a crude protein content of 10 to 16% by weight as a natural compounded feed ingredient, and contains NCR of histidine, phenylalanine, isoleucine, leucine, tryptophan, and valine.
Formulated to meet the required amount, arginine
At least 0.06% by weight, lysine at least 0.1% by weight, methionine at least 0.01% by weight, threonine at least 0.1% by weight, and glycine at least 0.04% by weight.
This is a low-protein feed for chick-rearing that is supplemented with each ingredient individually or as a mixture thereof in an amount that satisfies the NCR requirements, and inorganic salts and vitamins are added. NRC requirements are detailed regulations for nutritional requirements such as energy, protein, each amino acid, fat, inorganic salts, and vitamins for each type of chicken and age, and are published by the U.S. National Research Council (NRC). . In Japan, the Japanese Feeding Standards correspond to this. For example, regarding the crude protein content of egg-laying hens during the growing period, the NRC states that the crude protein content is 18% during the 0-6 week period.
We recommend 15% for ages 6 to 14 weeks and 12% for ages 14 to 20 weeks. The Japanese breeding standard recommends 19% for the chickling period (0 to 4 weeks old), 16% for the middle chickling period (4 to 10 weeks old), and 13% for the large chickling period (10 to 20 weeks old). . On the other hand, the breeding feed commonly distributed in Japan is 19-20% for chicks (0-3 or 4 weeks old) and 17-18% for middle chicks (3, 4-8 or 10 weeks old). , for large chicks (8 or 10 to 18 or 20 weeks old), 13 to 14%. Specified for egg-producing hens and broilers
The NRC requirements are shown below.

[Effect]

The ten essential amino acids for chick breeding are arginine, methionine, histidine, phenylalanine, isoleucine, threonine, leucine, tryptophan, lysine, and valine. The present invention has discovered that, by reinforcing arginine, methionine, threonine, and lysine among these, and further reinforcing glycine, which is a non-essential amino acid, there is no difference in growth even if the protein content is lowered. It has been done. [Example] Example 1 Arg, as crystalline amino acid, in chick breeding feed mainly composed of corn, soybean meal, fishmeal, and bran.
0.061% each of Lys, Met, Thr and Gly;
A low protein feed with a crude protein content of 16.2% was prepared by adding 0.097%, 0.096%, Thr 0.112%, and Gly 0.034%. Essential amino acids other than the amino acids in the first half were made from natural raw materials to meet the NRC requirements, and other vitamins and inorganic salts were corrected to the NRC requirements. A commonly used feed with a crude protein content of 19% was prepared as a control feed for comparison. The metabolizable energy content (ME) of the feed used in this test was
It was 2980Kcal. The formulation of the feed used in the test is shown below.

[Table] A 2-week feeding test was conducted using the above feed to 1-week-old egg-laying chicks (female). The number of birds tested was 1.
There were 3 repetitions of 8 birds in each group.

[Table] Example 2 Arg0.39 as a crystalline amino acid in a chick-rearing feed mainly consisting of defatted corn, whole egg powder, and agar
%, Lys0.25%, Mer0.01%, Thr0.23%, Gly0.5
% was added to produce a low protein feed with a crude protein content of 15.6%. Other nutritional ingredients were determined in the same manner as in the example. The formulation of the feed used in the test is shown below.

[Table] A 2-week feeding test was conducted using the above feed to 1-week-old and 3-week-old egg-laying chicken chicks (female) until they were 3 weeks old and 5 weeks old, respectively. The number of birds tested was 8 in 1 ward.
There were 4 repetitions of the wings.

〔Effect of the invention〕

By using the feed of the present invention, even if the crude protein content is reduced, the amount of weight gain comparable to that of conventional feeds can be ensured, and the efficiency of the feed can be improved.

Claims (1)

[Claims] 1 Natural compounded feed ingredients have a crude protein content of 10 to 16
% by weight, and histidine, phenylalanine, isoleucine, leucine, tryptophan, and valine are all blended to meet NCR requirements, arginine is 0.06% by weight or more, lysine is 0.1% by weight or more, and methionine is 0.01% by weight. that's all,
Threonine is 0.1% by weight or more and glycine is
A low-protein feed for raising chicks, which is supplemented with 0.04% by weight or more and satisfies the NCR requirement, either alone or as a mixture thereof, and further contains inorganic salts and vitamins.